Improvement in fly-screens



J. 0. WILSON 8v R. BOLINGER.

Fly-Screen.

No. 223,205. Patented Dec. 30

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ttes? N, PETERS. PMDfO-UTHOGRAFHER, WASHINGTON. D. c,

UNITED STATES PATENT OEEIoE.

JAMES O. WILSON, OF ST. LOUIS, MISSOURI, AND BEUBEN BOLINGER, OFJACKSONVILLE, ILLINOIS, SAID BOLINGER ASSIGNOR TO SAID WILSON.

IMPROVEMENT IN FLY-SCREENS.

Speciiication forming part of Letters Patent No. 223,205, dated December30, 1879; application led April 2, 1879.

To all whom it may concern.-

Be it known that we, JAMES OLIVER WIL- SON, of the city of St. Louis, inthe State of Missouri, and RUEBEN BOLINGER, of Jacksonville, in thecounty of Morgan and State lof Illinois, have invented a certain newand' useful Improvement in FlyEscapes, of which the following is a full,clear, and exact description, reference being had to the accompanying'drawings, forming part of this specincation.

Our invention relates to an improvement on the screens composed of wiregauze or netting stretched upon a frame, and arranged to lit in windowor door frames to prevent the entrance ot' iiies and other insects.

Our improvement consists in forming in the netting part of the screen adevice to al low the easy exit from the room of any insect walking upthe screen. This device is formed by attaching to the outer face ot' theframe a piece of gauze or netting, which extends npward from the bottomto near the top, where an aperture is left to allow the escape ot' theinsects. Another piece ofthe material istastened to the inner. face ofthe frame, extending from the top downward to a point somewhat helow thetop ot the other piece. rlhus between the two pieces ol'l gauze is aspace the width of the thickness ofthe frame. In this space are a numberofinclined teeth extending upwardly from the bottom ot' the upper pieceto nearly the inner surface ofthe lower and outer piece. These teeth donot materially interfere with the eXitof insects, which may wall; up andbe tween the teeth; but the teeth render it diiiicult for insects toreturn or enter downward through the escapeolpiening.

The device for escape or insects may be at any elevation in the screen,or there may he two or more of such devices.

In the drawings, Figure l is a perspective view of the invention, withpart of the outer sheet ot' gauze broken out to show the inclined teethwithin the aperture for the escape of the insects. Fig. 2 is a verticalsection through the middle of the screen. Fig. 3 is a vertical section,showing the device for the escape ol insects, with openings at differentelevations.

A is a frame made to fit within a door or window frame in the usualmanner of ilyscreens.

B is a sheet of wire-gauze or some other open-work fabric that willallow the passage otl air and will prevent the passage of iiies. Thesheet B is ot' less length than the frame A, and may extend continuouslyfrom one end of the frame to near the other end, leaving a space,O,tl1ereat, as shown in Fig. 2; or it may be secured to said frame intwo or more separate pieces, so that two or more openings lnay be formedin the screen, as shown in Fig. 3, a space, C, being lei't at the top ofeach sheet B. The sheet B is attached to the outer face of the frame A,as shown.

D is a sheet, which maybe of similar material to that of B, and which isattached to the inner face ot' the frame A, and extends from the top ofthe frame downward somewhat below the top of the sheet B.

At the lower edge of sheet D is a plate or angle-strip, E, having a rowot' upturned teeth extending almost to the sheet B. Between the teethare spaces, through which iiies can pass as they walk upward. They willnot be likely to pass downward between the teeth, because their habit isto walk upward and to ily downward, and in dying downward they would notpass through the spaces between the teeth, as said spaces would be toosmall to allow easy passage with the wings spread.

This screen may be used as a partition across a room or passage, toprevent the passage ot' insects in 011e direction and allow it in theother direction.

Having fully described our improvement, what we claim as new and of ourinvention l. In combination with the sheets B and D, the toothed plateE, arranged substantially as 'set forth.

JAMES OLIVER Y/VILSON. REUBEN BOLINGER.

Witnesses as to Wilsons signature:

SAML. KNIGHT, GEO. H. KNIGHT.

Witnesses as to Bolingers signature THos. P. STACY, W. H. MCCULLOUGH.

